December 1940 - The Second World War has been raging across Europe for over a year. Britain stands alone. There are fears of an invasion. Then, a German submarine and its crew vanish under mysterious circumstances. Fifty years later, the conflict finally seems over, as the Cold War comes to an end. Walls are being broken down. People who were separated for decades are brought back together. And things that have lain hidden surface again. For Siobhán Dannreuther, her grandparents past is distant history when a research project on Antarctica provides her with a welcome opportunity to escape the dreary winter of the British Isles and the aftermath of a brutal murder. It promises to be a perfectly normal adventure. Soon, however, she gets drawn into an increasingly confusing and unsettling world of disappearances, rumours, and myths. Reality seems to be slipping away from her. And as she begins searching for the answers to her current questions, she is confronted by the ghosts of a forgotten past.